I suppose you're talking about a tach(ometer)?
It's pretty easy to install yourself. I'll hunt for the photo.
There is a giant wire harness coming out of the ECU. Believe it or not, out of all those wires, there is only ONE solid white wire. That is your tach signal wire. Then you can find somewhere to patch into 12v power and ground.
I'll look for teh photo.
Here we go:
http://www.mikekemper.com/forum/ecu_tach_tap.jpg
As you can see, I the wire tap (red plastic thing) is attached to a white wire coming out of the ECU. That's it!
Oh... beware... a lot of the other wires may look white. There is one that is white with a light pink stripe. It's easy to confuse the two! Needless to say, a good flashlight or lamp is required.
[Edited by Kemper on Jan 6, 2006 7:13 PM]